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Experimental Study of Sulphate Attack on Steel Embedded in Reinforced Concrete

  • Ashutosh Shanker TrivediEmail author
  • Sudhir Singh Bhadauria
  • Sarvesh Kumar Jain
Original Contribution

Abstract

Corrosion in reinforced concrete structure is a serious problem that leads to unexpected premature deterioration of reinforced concrete structure. One of the causes of the steel corrosion is due to ingress of sulphide ions at the surface of reinforcing bars in concrete. This study is an attempt to estimate corrosion effect of sulphuric acid solution through the parameters such as corrosion current density, corrosion rate and weight loss. This experimental study is carried out with the help of three-electrode electrochemical system. The study involves 12 mm ø and 8 mm ø steel bars embedded in cylindrical concrete specimen kept in sulphuric acid solution. Formation of a brown ring and cracks is observed near the bottom. The corrosion rate is found to be very high, when the specimens are immersed in concentrated sulphuric acid solution. The effect of diameter of bar to corrosion rate is observed to be negligible. Rusting is more in that portion of bar which is near the top; this may be due to its proximity to counter electrode and no provision of cover at this portion.

Keywords

Reinforcement concrete Corrosion rate Sulphuric acid Corrosion current density Weight loss LPR technique 

Notes

References

  1. 1.
    Nick Birbilis, Kate M. Nairn, Maria Forsyth, Transient response analysis of steel in concrete. Corros. Sci. 45, 1895–1902 (2003)Google Scholar
  2. 2.
    M.T. Liang, R.J. Yang, Theoretical elucidation on the on-site measurements of corrosion rate of reinforcements. Constr. Build. Mater. 19, 175–180 (2005)Google Scholar
  3. 3.
    J. Prasad, D.K. Jain, Factors influencing the sulphate resistance of cement concrete and mortar. Asian J. Civ. Eng. (Build. Hous.) 7(3), 259–268 (2006)Google Scholar
  4. 4.
    M. Maslehuddin, I.M. Allam, G. Al Sulaimani, Al Mana, S.N. Abduljauward, Effect of rusting of reinforcing steel on its mechanical properties and bond with concrete. ACI Mater. J. 87(5), 367–373 (1996)Google Scholar
  5. 5.
    Neville Adam, Chloride attack of reinforced concrete: an overview. Mater. Struct. 28, 63–70 (1995)Google Scholar
  6. 6.
    C.A. Apostolopoulos, V.G. Papadakis, Consequences of steel corrosion on the ductility properties of reinforcement bar. Constr. Build. Mater. 22, 2316–2324 (2008)Google Scholar
  7. 7.
    C.M. Hansson, A. Poursaee, Reinforcing steel passivation in mortar and pore solution. Cem. Concr. Res. 37, 1127–1133 (2007)Google Scholar
  8. 8.
    S.H. Rizkalla, E.K. Attogbe, Response of concrete to sulfuric acid attack. Tech. Pap. ACI Mater. J. 85(6), 481–488 (1988)Google Scholar
  9. 9.
    M. Alexander, H. Beushausen, M. Otieno, Prediction of corrosion rate in RC structures—a critical review, in RILEM (2011), pp. 15–37Google Scholar
  10. 10.
    N. Yuzer, Prediction of time to crack initiation in reinforced concrete exposed to chloride. Constr. Build. Mater. 22, 1100–1107 (2008)Google Scholar
  11. 11.
    IS: 8112, Indian Standard Code of Practice Specification for Ordinary Portland Cement 43 Grade (Bureau of Indian Standards, New Delhi, 2013)Google Scholar
  12. 12.
    IS: 383, Indian Standard Code of Practice Specification for Coarse and Fine Aggregate for Concrete (Bureau of Indian Standards, New Delhi, 2016)Google Scholar
  13. 13.
    IS: 456, Indian Standard Code of Practice for Plain and Reinforced Concrete (Bureau of Indian Standards, New Delhi, 2000)Google Scholar
  14. 14.
    R. Corral Higuera, Sulphate attack and reinforcement corrosion in concrete with recycled concrete aggregates and supplementary cementing materials. Int. J. Electrochem. Sci. 6, 613–621 (2011)Google Scholar
  15. 15.
    F.G. Mars, Corrosion Engineering, 3rd edn. (McGraw Hill Book Company, New York, 1987)Google Scholar
  16. 16.
    M. Moreno et al., Corrosion of reinforcing steel in simulated concrete pore solutions effect of carbonation and chloride content. Corros. Sci. 46, 2681–2699 (2004)Google Scholar
  17. 17.
    M.A. Quarishi, D.K. Nayak, R. Kumar, V. Kumar, Corrosion of reinforced steel in concrete and its control: an overview. J. Steel Struct. Constr. 3(1), 1–6 (2017)Google Scholar
  18. 18.
    A. Geetha, P. Perumal, Effects of waterproofing admixtures on the flexural strength and corrosion resistance of concrete. J. Inst. Eng. India Ser. A 93(1), 73–78 (2012)Google Scholar
  19. 19.
    Song Ha-Won, V. Saraswathy, Corrosion monitoring of reinforced concrete structure—a review. Int. J. Electrochem. Sci. 2, 1–28 (2007)Google Scholar
  20. 20.
    L. Bertolini, M. Carsana, M. Gastaldi, F. Lollini, E. Redaelli, Corrosion of steel in concrete and its prevention in aggressive chloride bearing environments, in 5th International Conference on Durability of Concrete Structures (2016), pp. 13–25Google Scholar
  21. 21.
    M. Macias, L.M. Escudero, The effect of floride on corrosion of reinforcing steel in alkaline solutions. Corros. Sci. 36(12), 2169–2180 (1994)Google Scholar
  22. 22.
    B. Pradhan, B. Bhattacharjee, Performance evaluation in rebar in chloride contaminated concrete by corrosion rate. Constr. Build. Mater. 23, 2346–2356 (2009)Google Scholar
  23. 23.
    J.S. Jaffer, C.M. Hansson, The influence of crack on chloride-induced corrosion of steel in ordinary Portland cement and high performance concretes subjected to different loading conditions. Corros. Sci. 50, 3343–3353 (2008)Google Scholar
  24. 24.
    ASTM G 1-03, Standard Practice for Preparing, Cleaning, and Evaluating Corrosion Test Specimens (ASTM International, West Conshohocken, 2003)Google Scholar
  25. 25.
    IS: 1786, Indian Standard Code of Practice Specification for High Strength Deformed Steel Bars and Wires for Concrete (Bureau of Indian Standards, New Delhi, 2008)Google Scholar

Copyright information

© The Institution of Engineers (India) 2019

Authors and Affiliations

  • Ashutosh Shanker Trivedi
    • 1
    Email author
  • Sudhir Singh Bhadauria
    • 2
  • Sarvesh Kumar Jain
    • 3
  1. 1.RGPVBhopalIndia
  2. 2.UIT, RGPVBhopalIndia
  3. 3.MITSGwaliorIndia

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